Improvement in aero-vapor burners



ATENT Prion,

OSCAR F. MORRILL, OF CHELSEA, MASSACHUSETTS.

IMPROVEMENT IN AERO-VAPOR BURNERS.

Specification forming part of Letters Patent No. 40,353, dated October 20,1863.

10 all whom it may concern Be it known that I, OSCAR F. MoRRILL, a resident of Chelsea, in the county of Suffolk and State of Massachusetts, have made a new and useful invention having reference to apparatus for generating heat by the combustion of a mixture of air and the vapor of a hydrocarbon fluid; and I do hereby declare the same to be fully described in the following specification and represented in the accompanying drawing, which denotes a vertical section of that part of the apparatus to which my invention appertains.

The nature of my said invention consists in an improved aero-vapor burner as not only constructed with the fluid vaporizing conduit arranged so as to extend across or over the foraminous cap or over the same and into or through the chimney, and from thence down either within or outside and alongside of and into the air and vapor-mixing chamber, but as having that portion of the conduit which is situated immediately over the foraminous cap provided with a tubular arch, or its equivalent, the same being as and for the purpose or objects substantially as hereinafter specified.

The nature of my invention further consists in the combination of a heater or heat-conductor with the aero-vapor burner and the conduit applied thereto, substantially as hereinafter described.

The'parts composing the aero-vapor burner are the foraminous cap A and the air and vaporchamber or tube B,which is surrounded by the said cap and is open at bottom. The burner is provided with a chimney, 0, arranged over it, as shown in the drawing.

A pipe, D, for conducting to the burner and from a reservoir the fluid to be vaporized, is shown as extending into the chimney and over the cap A. After entering the chimney, and prior to its passage below the cap, the said conduit is formed or provided with a bend or tubular arch, as shown at D, which arch extends upward within the chimney. That portion of the conduit which is marked D, and which projects below the cap A, may go down through the tube 13, as shown in the drawing, or instead thereof it may be carried out of the chimney and down outside and alongside of the tube B, and thence into such tube, the said part D terminating in a valve case or chest, E, furnished with a jet-hole, a, and a valve, 1),

thereto, the jet-hole being so disposed as to be capable of discharging the vapor of the fluid into the tube B,which, for the sake of distinction, may be and oftenis termed the mixer.

Furthermore, a metallic rod or heat-eonductor, F,which may be provided with a head, 0, extends downward from or through the cap A, and rises a short distance above it. At its lower end this conductor F rests by a foot, d, directly on the top of the valve-chest E .of the conduit, and is provided with a hole or passage,f, through which the vapor that may be discharged from such chest may readily flow. The conductor may extend down within the tube B in manner as shown in the drawing, or it may go down outside of such tube and be turned into it.

The arch D has for its purpose not only the prevention of the too rapid escape of fluid by the flame on the cap, but the obtentiou of more heating-surface in contact with the flame than would be secured were the conduit merely to extend straight across the burner. The arch retains the fluid and carries it up into the hot ter parts of the flame, and leaves the cap free from obstruction to the passage of the air and vapor through it.

It sometimes happens that the fluid, not being sufficiently vaporized by the flame, will escape by the part of the conduit on which the flame may act, in which case it will flow down the conduit and leak out of its jet-hole. The arch operates to prevent this result. Again, it is often found that owing to the inrush of cold air into and through the mixer the portion D of the conduitor, in other words, that part of the conduit which goes through the mixer and is below the cap A-beeomes cooled, so as to condense more or less of the vapor which may be flowing through it. This, although not to so great an extent, will also take place when the conduit extends down alongside of the outer surface of the mixer, and will becaused by the upward rush of air toward'the chimney. To compensate for this loss of heat by the conduit, I make use of the heatconductor F, arranged as hereinbefore described. Being a solid piece of metal, a

large amount of heat will be transmitted by it to the lower part of the conduit, and will not only serve to prevent condensation of vapor therein, but to more or less increase the tension of such vapors.

conduit which is situated immediately over the said cap provided with the tubular arch D, or its equivalent, to project upward within the chimney, the same being for the purpose or purposes as hereinbefore specified.

2. The improvement of the extension of the conduit D downward through the cap A and within the air and vapor mixing chamber, in manner substantially as specified.

3. The combination of the heater or heatconductor F-With theaero-vapor burner and the conduit D applied thereto, substantially as described.

OSCAR F. MORRILL.

Witnesses:

R. H. EDDY, .F. 1?. HALE, Jr. 

